Nokea
Salivary glands structurally are
- A. compound tubuloadnar or tubuloalveolar glands.
- B. compound alveolar or acinar glands.
- C. compound tubular glands.
- D. simple branched alveolar or acinar glands.
Correct Answer: A
Rationale: The correct answer is A: compound tubuloadnar or tubuloalveolar glands. Salivary glands are compound glands with both tubular and alveolar structures, allowing for both secretion and storage of saliva. The tubuloadnar or tubuloalveolar structure allows for efficient production and release of saliva.
Incorrect choices:
B: Compound alveolar or acinar glands - Alveolar and acinar glands do not have the tubular structure required for efficient saliva production.
C: Compound tubular glands - Tubular glands lack the alveolar structure needed for storage and release of saliva.
D: Simple branched alveolar or acinar glands - Simple glands do not have the complexity needed for optimal saliva production and release.
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Which of the following sports drinks would BEST promote BOTH glucose absorption and water absorption (hydration) during aerobic exercise?
- A. Drink A: 20% carbohydrate and sodium free
- B. Drink B: 8% carbohydrate and sodium free
- C. Drink C: 20% carbohydrate and contains sodium
- D. Drink D: 8% carbohydrate and contains sodium
Correct Answer: D
Rationale: The correct answer is D: Drink D with 8% carbohydrate and contains sodium. During aerobic exercise, glucose and sodium are crucial for optimal hydration and energy replenishment. The 8% carbohydrate concentration is within the recommended range for efficient glucose absorption, while the presence of sodium helps in fluid retention and electrolyte balance. Choices A and B lack sodium, which is necessary for hydration. Choice C has the right carbohydrate concentration but lacks sodium, making it less effective compared to Drink D.
The _____ prevents food from entering the small intestine.
- A. cardiac sphincter
- B. pyloric valve
- C. ileo-colic valve
- D. sphincter of Oddi
Correct Answer: B
Rationale: The correct answer is B: pyloric valve. The pyloric valve is located between the stomach and the small intestine, specifically at the junction of the stomach and the duodenum. Its main function is to regulate the flow of partially digested food from the stomach into the small intestine. This control is crucial to ensure that the small intestine receives food at a manageable rate for optimal digestion and absorption of nutrients. The cardiac sphincter (A) is located at the entrance of the stomach from the esophagus and prevents acid reflux. The ileo-colic valve (C) is located between the small and large intestines, controlling the flow of contents between them. The sphincter of Oddi (D) regulates the flow of bile and pancreatic juice into the small intestine.
A nurse is reviewing the provider's prescriptions for a client experiencing a paralytic ileus following an appendectomy. Which of the following actions should the nurse expect to take?
- A. Administer an antacid.
- B. Provide a bulk-forming agent.
- C. Insert nasogastric tube.
- D. Apply a truss.
Correct Answer: C
Rationale: The correct answer is C: Insert nasogastric tube. In a paralytic ileus, the intestines are unable to contract and move contents, leading to bowel obstruction. Inserting a nasogastric tube helps decompress the intestines by removing gas and fluid, relieving discomfort and preventing further complications. Administering an antacid (A) is not indicated for paralytic ileus. Providing a bulk-forming agent (B) may exacerbate the obstruction. Applying a truss (D) is used for hernias, not for paralytic ileus.
Which enzyme is responsible for digesting carbohydrates?
- A. pepsin
- B. amylase
- C. lipase
- D. trypsin
Correct Answer: B
Rationale: The correct answer is B: amylase. Amylase is responsible for digesting carbohydrates by breaking down starches into simple sugars. Pepsin (A) digests proteins, lipase (C) digests fats, and trypsin (D) digests proteins as well. Amylase specifically targets carbohydrates, making it the correct enzyme for this function.
Which of the following is an opening in the large bowel created by bringing a section of the large intestine out to the abdomen and fashioning a stoma?
- A. Continent ileostomy
- B. Colostomy
- C. Ileostomy
- D. Ileoanal reservoir
Correct Answer: B
Rationale: The correct answer is B: Colostomy. A colostomy is an opening in the large bowel created by bringing a section of the large intestine out to the abdomen to form a stoma. This procedure is typically done to divert stool in cases of colorectal diseases or surgeries.
A: Continent ileostomy - This choice is incorrect because a continent ileostomy involves creating a pouch inside the body to collect waste, rather than bringing a section of the large intestine out to the abdomen.
C: Ileostomy - This choice is incorrect because an ileostomy involves bringing the end of the small intestine out to the abdomen to create a stoma, not a section of the large intestine.
D: Ileoanal reservoir - This choice is incorrect as it refers to a surgical procedure where the colon and rectum are removed, and a pouch is created from the small intestine to restore bowel function, not to create a stoma in the large bowel.